XM Male Chromoly Steel Series Rod Ends: For the ultimate in performance rod ends, look no further than QA1's XM Chromoly Steel Series Male rod ends. These heavy duty rod ends are commonly used on 4-link and ladder bars for their strength and durability. XM Series rod ends are completely self-sealing and self-lubricating because of their PTFE®/Kevlar® injection molded race that keeps dirt and debris out.